#include<iostream>
#include<stdio.h>
using namespace std;
#include <iomanip>
#include  <cmath>
#include <stdlib.h>
#include <string.h>
int main()
{
    int a, b = 1;
    float c, d;
    cin >> a;
    d = a / 1;
    c = 10 + a / 10;

    if (d > c) { cout << "v"; }
    else
        cout << "w";






}